An SF34 crew, during climb out of dtw, experienced an acrid smoke smell, returned to dtw.

Attributes
ACN	524865
Time
Date	200109
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : dxo.vor
State Reference	MI
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	common carrier : air carrier
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	climbout : initial
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 1300 flight time type : 280
ASRS Report	524865
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical non adherence : company policies other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : declared emergency flight crew : diverted to another airport flight crew : landed as precaution
Consequence	other
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Aircraft had come from maintenance hangar shortly before flight. All pre-flight and starting checks and procedures were normal. Shortly after takeoff from dtw, when low pressure bleed air values were opened per normal procedures, an extremely strong, acrid smoke smell was noted. No smoke was seen in the reported physical effects of the fumes (lightheaded, headache, etc.) the decision was made to return to dtw. Upon notification to ATC, ATC indicated that they were 'rolling the trucks.' an uneventful, normal approach and landing was made, and the aircraft was followed to gate. Fumes were likely caused by a 'compressor' wash which was not fully rinsed off the engine. Further sits like this could be prevented by assuring all cleaning agents are properly rinsed/removed before the aircraft is returned to service.

Original NASA ASRS Text

Title: AN SF34 CREW, DURING CLB OUT OF DTW, EXPERIENCED AN ACRID SMOKE SMELL, RETURNED TO DTW.

Narrative: ACFT HAD COME FROM MAINT HANGAR SHORTLY BEFORE FLT. ALL PRE-FLT AND STARTING CHECKS AND PROCS WERE NORMAL. SHORTLY AFTER TKOF FROM DTW, WHEN LOW PRESSURE BLEED AIR VALUES WERE OPENED PER NORMAL PROCS, AN EXTREMELY STRONG, ACRID SMOKE SMELL WAS NOTED. NO SMOKE WAS SEEN IN THE RPTED PHYSICAL EFFECTS OF THE FUMES (LIGHTHEADED, HEADACHE, ETC.) THE DECISION WAS MADE TO RETURN TO DTW. UPON NOTIFICATION TO ATC, ATC INDICATED THAT THEY WERE 'ROLLING THE TRUCKS.' AN UNEVENTFUL, NORMAL APCH AND LNDG WAS MADE, AND THE ACFT WAS FOLLOWED TO GATE. FUMES WERE LIKELY CAUSED BY A 'COMPRESSOR' WASH WHICH WAS NOT FULLY RINSED OFF THE ENG. FURTHER SITS LIKE THIS COULD BE PREVENTED BY ASSURING ALL CLEANING AGENTS ARE PROPERLY RINSED/REMOVED BEFORE THE ACFT IS RETURNED TO SVC.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.